332354 + Interview Questions in Secondary School in Math

1.	Express the following ratios as fraction and reduce them to the simplest form the question is 3 kg to 200 gram
Answer» ANSWER: $3kg:200gram$ in the SIMPLEST FORM as a fraction⇒ $\frac{3}{2} kg: \frac{200}{2} gram$ ⇒∴ $\frac{3}{2} kg:\frac{100}{1} gram$ Step-by-step EXPLANATION:

1.

Express the following ratios as fraction and reduce them to the simplest form the question is 3 kg to 200 gram

Answer»

ANSWER:

$3kg:200gram$ in the SIMPLEST FORM as a fraction⇒

$\frac{3}{2} kg: \frac{200}{2} gram$ ⇒∴

$\frac{3}{2} kg:\frac{100}{1} gram$

Step-by-step EXPLANATION:

Discussion

2.	Square plot is offside 40 a path of uniform width for metre runs around it inside the plot find the cost of covering the path with breaks at rupees 2 per square metre and also the cost of putting grass on the remaining portion of plot at the rate of rupees 1.25 per square metre
Answer» Answer: PERIMETER of the square 404 = 160 cost = 1602 = 320

2.

Square plot is offside 40 a path of uniform width for metre runs around it inside the plot find the cost of covering the path with breaks at rupees 2 per square metre and also the cost of putting grass on the remaining portion of plot at the rate of rupees 1.25 per square metre

Answer»

Answer:

PERIMETER of the square 40*4 = 160

cost = 160*2 = 320

Discussion

3.	Expand the sum (3x-y-2z) ²
Answer» ANSWER: $(3x-y-2z)^{2} =3^{2} x^{2} -y^{2} -2^{2} z^{2} +12xyz$ ⇒ ∴ $9x^{2} -y-4z^{2} +12xyz$ Step-by-step EXPLANATION:

3.

Expand the sum (3x-y-2z) ²

Answer»

ANSWER:

$(3x-y-2z)^{2} =3^{2} x^{2} -y^{2} -2^{2} z^{2} +12xyz$ ⇒

∴

$9x^{2} -y-4z^{2} +12xyz$

Step-by-step EXPLANATION:

Discussion

4.	What is the total length of all meteors that are 1 6/8 inches? (4 points)
Answer» ANSWER: The TOTAL LENGTH of all METEORS that are 16/8 INCHES is 0.04445.

4.

What is the total length of all meteors that are 1 6/8 inches? (4 points)

Answer»

ANSWER:

The TOTAL LENGTH of all METEORS that are 16/8 INCHES is 0.04445.

Discussion

5.	Find the volume of rectangular box with dimensions 2x2y,3x,5y2
Answer» Step-by-step EXPLANATION: VOLUME of CUBOID = lxbxh $2x2y \times 3x \times 5 {y}^{2} \\ 4xy \times 15x {y}^{2} \\ 60 {x}^{2} {y}^{3}$ PLZ MARK me as brainliiest

5.

Find the volume of rectangular box with dimensions 2x2y,3x,5y2

Answer»

Step-by-step EXPLANATION:

VOLUME of CUBOID = lxbxh

$2x2y \times 3x \times 5 {y}^{2} \\ 4xy \times 15x {y}^{2} \\ 60 {x}^{2} {y}^{3}$

PLZ MARK me as brainliiest

Discussion

6.	3 8× (1 – 1 3 ) hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooopppppppppppppppppppppppppppppppppp
Answer» ANSWER: bwh5546jjee56m5v5evk5kvrrvkkr kvrr7ke55kvrrkk

6.

3 8× (1 – 1 3 ) hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooopppppppppppppppppppppppppppppppppp

Answer»

ANSWER:

bwh5546jjee56m5v5evk5kvrrvkkr kvrr7ke55kvrrkk

Discussion

7.	You made your fortune As part of your legacy, you would like to endow an annual scholarship at your Alma mater. You want it to be memorable, so you would like the scholarship to be $20,000 per year. If the university earns 8% on its investments, and if the first scholarship is to be given out in one year’s time, how much will you need to donate to create the scholarship fund?
Answer» Step-by-step EXPLANATION: HI. girls. joi.n if. you. want. to. SHOW. and SEE ncp-hijw-xnr

7.

You made your fortune As part of your legacy, you would like to endow an annual scholarship at your Alma mater. You want it to be memorable, so you would like the scholarship to be $20,000 per year. If the university earns 8% on its investments, and if the first scholarship is to be given out in one year’s time, how much will you need to donate to create the scholarship fund?

Answer»

Step-by-step EXPLANATION:

HI. girls.

joi.n

if. you. want.

to. SHOW. and

SEE

ncp-hijw-xnr

Discussion

8.	Solve any one of the following.)DIn A ABC, DE \|\| AB, AD= 3 DCA(DABFD) = 90cmfind A( A ABC)
Answer» ANSWER: ABC is 60 ADE is 90 AEC is 30

8.

Solve any one of the following.)DIn A ABC, DE || AB, AD= 3 DCA(DABFD) = 90cmfind A( A ABC)

Answer»

ANSWER:

ABC is 60
ADE is 90
AEC is 30

Discussion

9.	Question 1The length and breadth of a rectangular park are in the ratio 5: 2. A 2.5 m wide path running all around the outside the park has an area 305 m2. Find the dimensions of the park.
Answer» ANSWER: okkkkkkkkkkkkkkkkkkkkkkkkkkkk

9.

Question 1The length and breadth of a rectangular park are in the ratio 5: 2. A 2.5 m wide path running all around the outside the park has an area 305 m2. Find the dimensions of the park.

Answer»

ANSWER:

okkkkkkkkkkkkkkkkkkkkkkkkkkkk

Discussion

10.	If the length and area of a circle is same, then the radius of the circle is______units
Answer» ANSWER: ✓2 Explanation- Let the RADIUS be X. Length = 2PIX Area = piXX Since they are equal, 222/7X = 22/7XX, 44X/7 = 22X^2/7 308 = 154X^2 308/154 = X^2 2 = X^2 X = ✓2

10.

If the length and area of a circle is same, then the radius of the circle is______units

Answer»

ANSWER:

✓2

Explanation-

Let the RADIUS be X.

Length = 2*PI*X

Area = pi*X*X

Since they are equal,

2*22/7*X = 22/7*X*X,

44X/7 = 22X^2/7

308 = 154X^2

308/154 = X^2

2 = X^2

X = ✓2

Discussion

11.	A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?
Answer» ANSWER: i THINK 2 Step-by-step EXPLANATION: I HOPE it is RIGHT.

11.

A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?

Answer»

ANSWER:

i THINK 2

Step-by-step EXPLANATION:

I HOPE it is RIGHT.

Discussion

12.	Solve given equations by Crout,s method 3x  2y  7z  4, 2x  3y  z  5,3x  4y  z  7
Answer» ANSWER: not knowning and THANKYOU for 5 POINTS

12.

Solve given equations by Crout,s method 3x  2y  7z  4, 2x  3y  z  5,3x  4y  z  7

Answer»

ANSWER:

not knowning

and THANKYOU for 5 POINTS

Discussion

13.	The ratio of length to width of a rectangular park is 9:5. If the width of the park is 40m. Find the length of the park.
Answer» Answer: 72 m Step-by-step explanation: Ratio of length to width is 9:5 Let the common MULTIPLE be y ∴ Length = 9y and width = 5Y Now, width = 40 (GIVEN) ∴ 5y = 40 y = 8 ∴ Length = 9y = 9 × 8 = 72 m

13.

The ratio of length to width of a rectangular park is 9:5. If the width of the park is 40m. Find the length of the park.

Answer»

Answer:

72 m

Step-by-step explanation:

Ratio of length to width is 9:5

Let the common MULTIPLE be y

∴ Length = 9y and width = 5Y

Now, width = 40 (GIVEN)

∴ 5y = 40

y = 8

∴ Length = 9y = 9 × 8 = 72 m

Discussion

14.	What are co-prime numbers ?
Answer» $\Huge\mathcal\blue{\underbrace{\overbrace{\mid{\orange{Answer}}\mid}}}$ A Co-PRIME number is a set of numbers or integers which have only 1 as their COMMON factor i.e. their HIGHEST common factor (HCF) will be 1. Co-prime numbers are ALSO known as relatively prime or mutually prime numbers.

14.

What are co-prime numbers ?

Answer»

$\Huge\mathcal\blue{\underbrace{\overbrace{\mid{\orange{Answer}}\mid}}}$

A Co-PRIME number is a set of numbers or integers which have only 1 as their COMMON factor i.e. their HIGHEST common factor (HCF) will be 1. Co-prime numbers are ALSO known as relatively prime or mutually prime numbers.

Discussion

15.	Find derivatives using the first principle, cosecx
Answer» ANSWER is : We have to find the derivative of cosec X using first Principle Solution : From the definition of the cosecant FUNCTION we know that, csc x=1 / sinx From Derivative of Sine Function: d/ dx(sinx)= cosx Now,using chain rule: d/ dx(cscx) = cosx−1 / sin2x (Chain Rule for DERIVATIVES) = −1/ sinx * cosx / sinx = −coscx . cotx Answer The derivative of cosec x is −cosx .cotx

15.

Find derivatives using the first principle, cosecx

Answer»

ANSWER is :

We have to find the derivative of cosec X using first Principle

Solution :

From the definition of the cosecant FUNCTION we know that,

csc x=1 / sinx

From Derivative of Sine Function:

d/ dx(sinx)= cosx

Now,using chain rule:

d/ dx(cscx) = cosx−1 / sin2x (Chain Rule for DERIVATIVES)

= −1/ sinx * cosx / sinx

= −coscx . cotx

Answer

The derivative of cosec x is −cosx .cotx

Discussion

16.	Square root of 7225 by using dwandwa yoga methods
Answer» Answer: 85 SQUARE ROOT of 7225 = 85

16.

Square root of 7225 by using dwandwa yoga methods

Answer»

Answer:

85 SQUARE ROOT of 7225 = 85

Discussion

17.	What is the cause of marketing 50 units of toy cars
Answer» Answer: A company makes toy cars at a PRODUCTION cost of Rs 17.50 per unit. A market SURVEY reveals that 10% of the product will be LOST, 5% will be rejected, 5% will decay and 5% will be stolen. to REALIZE 28% profit company must sell at Rs. 29.86 unit price Step-by-step explanation: Hope this helps you.

17.

What is the cause of marketing 50 units of toy cars

Answer»

Answer:

A company makes toy cars at a PRODUCTION cost of Rs 17.50 per unit. A market SURVEY reveals that 10% of the product will be LOST, 5% will be rejected, 5% will decay and 5% will be stolen.

to REALIZE 28% profit company must sell at Rs. 29.86 unit price

Step-by-step explanation:

Hope this helps you.

Discussion

18.	The area of a square football field is 16900msqaured calculate the length of the field
Answer» ANSWER: ROOT of 16900 = 130cm. Step-by-step EXPLANATION:

18.

The area of a square football field is 16900msqaured calculate the length of the field

Answer»

ANSWER:

ROOT of 16900 = 130cm.

Step-by-step EXPLANATION:

Discussion

19.	22(-2) किसके बराबर है?
Answer» Answer: 22(-2) 22 × (-2) = (-44) Here's the REQUIRED answer to your QUESTION

19.

22(-2) किसके बराबर है?

Answer»

Answer:

22(-2)

22 × (-2)

= (-44)

Here's the REQUIRED answer to your QUESTION

Discussion

20.	0.53,4.32,3.05,3.065,4.23,5.03 in descending order are ---
Answer» Answer: 5.03 4.32 4.23 3.065 3.05 0.53 Step-by-step EXPLANATION: PLZ MAKE me BRANIEST

20.

0.53,4.32,3.05,3.065,4.23,5.03 in descending order are ---

Answer»

Answer:

5.03 4.32 4.23 3.065 3.05 0.53

Step-by-step EXPLANATION:

PLZ MAKE me BRANIEST

Discussion

21.	Bob and Janeare saving to buy a boat at the end of 5 years. If the boat costs $25,000, and they can earn 8 percent a year on their savings, how much do they need to put aside at the end of every year 1 through 5? Round off your final answer to three digits after the decimal point.
Answer» Answer: 8% ayear = $\frac{8}{100} X25000=2000$ ⇒ every YEAR they can put 2000 up til the 5TH year $=10000$ at the END of the 5th year so they need to add 15000 plus from their 8% yearly savings before they can buy the boat⇒ That is 10.000$ Step-by-step explanation:

21.

Bob and Janeare saving to buy a boat at the end of 5 years. If the boat costs $25,000, and they can earn 8 percent a year on their savings, how much do they need to put aside at the end of every year 1 through 5? Round off your final answer to three digits after the decimal point.

Answer»

Answer:

8% ayear = $\frac{8}{100} X25000=2000$ ⇒

every YEAR they can put 2000 up til the 5TH year

$=10000$ at the END of the 5th year

so they need to add 15000 plus from their 8% yearly savings before they can buy the boat⇒

That is 10.000$

Step-by-step explanation:

Discussion

22.	2-1/4और1-4/5के योग और गुण के बीच का अंतर बताओं।
Answer» Step-by-step explanation: वट वृक्ष के पास ही eg FIRST I ⌚ eiehebf I and the Of a TOWER from the a show while the I have ✌️ in the my life are a BIT different First ka answer hai 63 I ⌚ erbqfsnf and Hfkddwkge I ♊ it up it is a great idea ✌️ I'm not the icy of this MOVIE but is I ✌️ i have to go say it again n again and he First I eiehebf ⌚ the and I the one way or the

22.

2-1/4और1-4/5के योग और गुण के बीच का अंतर बताओं।

Answer»

Step-by-step explanation:

वट वृक्ष के पास ही eg

FIRST I ⌚ eiehebf I and the

Of a TOWER from the a show while the

I have ✌️ in the my life are a BIT different

First ka answer hai 63 I ⌚ erbqfsnf and

Hfkddwkge I ♊ it up it is a great idea

✌️ I'm not the icy of this MOVIE but is

I ✌️ i have to go say it again n again and he

First I eiehebf ⌚ the and I the one way or the

Discussion

23.	1 3 5 7 9 11 13 15 17 19 21 23 25 27 29=30
Answer» Step-by-step EXPLANATION: HI. girls. joi.n if. you. want. to. SHOW. and see ncp-hijw-xnr

23.

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29=30

Answer»

Step-by-step EXPLANATION:

HI. girls.

joi.n

if. you. want.

to. SHOW. and

see

ncp-hijw-xnr

Discussion

24.	Q. Let us assume a triangle ABC which has only one acute angle (say ZA) Then we have_________________note:- this is Unnecessary questions-__________________chawla me-et pe aa please
Answer» just c●me once upj-bkjh-abn

24.

Q. Let us assume a triangle ABC which has only one acute angle (say ZA) Then we have_note:- this is Unnecessary questions-__chawla me-et pe aa please

Answer»

just c●me once

upj-bkjh-abn

Discussion

25.	1. Which of the two is more10% of 600 or 5% of 1000.
Answer» Case I 10 % of 600 = 10/100 × 600 = 60 Case II 5 % of 1000 = 5/100 × 1000 = 50 That's why (10 % of 600) is more

25.

1. Which of the two is more10% of 600 or 5% of 1000.

Answer»

Case I

10 % of 600

= 10/100 × 600

= 60

Case II

5 % of 1000

= 5/100 × 1000

= 50

That's why (10 % of 600) is more

Discussion

26.	1-sin²o Cos²o/2+sin²o cos²o
Answer» Answer: DATA inadequate Step-by-step EXPLANATION: what do we have to do with this IDENTITY provide with full QUESTION

26.

1-sin²o Cos²o/2+sin²o cos²o

Answer»

Answer:

DATA inadequate

Step-by-step EXPLANATION:

what do we have to do with this IDENTITY provide with full QUESTION

Discussion

27.	the retio of the circumference of two cricle is 3:1 if the circumference if figger cricle is 39.36 cm the redius of the smaller cricle is
Answer» Given : Ratio of circumference of two circle = 3:1 Circumference of bigger circle = 39.36 cm To find : RADIUS of SMALLER circle Formula used : Circumference of circle = 2π × radius Solution : It is given that ratio of circumference of two circle is 3:1 ➝ Circumference of bigger circle : Circumference of smaller circle = 3 : 1 $\sf \implies \dfrac{Circumference \: of \: bigger \: circle }{ Circumference \: of \: smaller \: circle}\:= \dfrac{3}{ 1}$ $\sf \implies \dfrac{39.36 \: cm}{ Circumference \: of \: smaller \: circle}\:= \dfrac{3}{ 1}$ $\sf \implies \dfrac{39.36 \: cm}{ 3}\:= Circumference \: of \: smaller \: circle$ $\sf \implies Circumference \: of \: smaller \: circle \: = \: 13.12 \: cm$ ________________________________ Let , R be radius of smaller circle Therefore, circumference of smaller circle = 2πr $\sf \implies 2\pi \: r \: = \: 13.12 \: cm$ $\sf \implies \: r \: = \: \dfrac{13.12 \: cm}{2\pi}$ $\sf \implies \: r \: = \: \dfrac{6.58 \: cm}{3.14}$ $\sf \implies \: \bold{r \: = \: 2.1\: cm}$ ________________________________ ANSWER : Radius of smaller circle = 2.1 cm

27.

the retio of the circumference of two cricle is 3:1 if the circumference if figger cricle is 39.36 cm the redius of the smaller cricle is

Answer»

Given :

Ratio of circumference of two circle = 3:1
Circumference of bigger circle = 39.36 cm

To find :

RADIUS of SMALLER circle

Formula used :

Circumference of circle = 2π × radius

Solution :

It is given that ratio of circumference of two circle is 3:1

➝ Circumference of bigger circle : Circumference of smaller circle = 3 : 1

$\sf \implies \dfrac{Circumference \: of \: bigger \: circle }{ Circumference \: of \: smaller \: circle}\:= \dfrac{3}{ 1}$

$\sf \implies \dfrac{39.36 \: cm}{ Circumference \: of \: smaller \: circle}\:= \dfrac{3}{ 1}$

$\sf \implies \dfrac{39.36 \: cm}{ 3}\:= Circumference \: of \: smaller \: circle$

$\sf \implies Circumference \: of \: smaller \: circle \: = \: 13.12 \: cm$

________________________________

Let , R be radius of smaller circle

Therefore, circumference of smaller circle = 2πr

$\sf \implies 2\pi \: r \: = \: 13.12 \: cm$

$\sf \implies \: r \: = \: \dfrac{13.12 \: cm}{2\pi}$

$\sf \implies \: r \: = \: \dfrac{6.58 \: cm}{3.14}$

$\sf \implies \: \bold{r \: = \: 2.1\: cm}$

________________________________

ANSWER :

Radius of smaller circle = 2.1 cm

Discussion

28.	Adam got 54 out 66 correct in his test what fraction of the mark did he get wrong
Answer» 12/66 = 2/11 It's the REQUIRED ANSWER to your QUESTION.

28.

Adam got 54 out 66 correct in his test what fraction of the mark did he get wrong

Answer»

12/66

= 2/11

It's the REQUIRED ANSWER to your QUESTION.

Discussion

29.	Q. Let us assume a triangle ABC which has only one acute angle (say ZA) Then we have_________________note:- this is Unnecessary questions-__________________jo bhi kajal hai please ism-ee_ting ko jo-in kre pixqqojuzs
Answer» *kaha* HO *yrr... kaha* *busy* ho *itna... aise* *ignore* *KYU* kr *RHE* ho *mujhe* ☹

29.

Q. Let us assume a triangle ABC which has only one acute angle (say ZA) Then we have_note:- this is Unnecessary questions-__jo bhi kajal hai please ism-ee_ting ko jo-in kre pixqqojuzs

Answer»

kaha HO yrr...

kaha busy ho itna...

aise ignore KYU kr RHE ho mujhe ☹

Discussion

30.	Check if the following functions have an inverse functions. if yes find the inverse functions
Answer» Answer: HAPPY PERFUME day NAHI malum SORRY

30.

Check if the following functions have an inverse functions. if yes find the inverse functions

Answer»

Answer:

HAPPY PERFUME day NAHI malum SORRY

Discussion

31.	The amount of air present in a cylinder when a vacuum pump removes 1/4 of the air remaining in the cylinder at a time.
Answer» ANSWER: no it is not an arithmetic progression Step-by-step explanation: LET a be the amount of air INITIALLY Amount of air remaining after 1st pump =a –(a/4)=3a/4 Amount of air remaining after 2nd pump= (3a/4) – (1/4)(3a/4)=9a/16 Amount of air remaining after 3RD pump= (9a/16) – (1/4)(9a/16)=27a/64 So the series is like a,3a/4,9a/4,27a/64…….. Difference Ist and second term=-a/4 Difference between Second and Third term= -3a/16 So difference is not constant So it is not Arithmetic Progression I think this answer is help ful;.

31.

The amount of air present in a cylinder when a vacuum pump removes 1/4 of the air remaining in the cylinder at a time.

Answer»

ANSWER:

no

it is not an arithmetic progression

Step-by-step explanation:

LET a be the amount of air INITIALLY Amount of air remaining after 1st pump =a –(a/4)=3a/4

Amount of air remaining after 2nd pump= (3a/4) – (1/4)(3a/4)=9a/16

Amount of air remaining after 3RD pump= (9a/16) – (1/4)(9a/16)=27a/64

So the series is like

a,3a/4,9a/4,27a/64……..

Difference Ist and second term=-a/4

Difference between Second and Third term= -3a/16

So difference is not constant

So it is not Arithmetic Progression

I think this answer is help ful;.

Discussion

32.	Difference between surface area and volume
Answer» Answer: SURFACE area is a TWO-dimensional MEASURE, while volume is a three-dimensional measure. Two FIGURES can have the same volume but different surface areas. Step-by-step EXPLANATION: hope it helps

32.

Difference between surface area and volume

Answer»

Answer:

SURFACE area is a TWO-dimensional MEASURE, while volume is a three-dimensional measure. Two FIGURES can have the same volume but different surface areas.

Step-by-step EXPLANATION:

hope it helps

Discussion

33.	What are rational numbers ?
Answer» $\huge\mathbb\red{❥Answer\:}$ In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of TWO integers, a NUMERATOR p and a non-zero DENOMINATOR q. Every INTEGER is a rational number: for EXAMPLE, 5 = 5/1.

33.

What are rational numbers ?

Answer»

$\huge\mathbb\red{❥Answer\:}$

In mathematics, a rational number is a number such as −3/7 that can be expressed as the quotient or fraction p/q of TWO integers, a NUMERATOR p and a non-zero DENOMINATOR q. Every INTEGER is a rational number: for EXAMPLE, 5 = 5/1.

Discussion

34.	11. Solve(5) * - 52x-3 = 20
Answer» ANSWER: -52x-3=20 -52x=20+3 -52x=23 x=23/-52 x=-0.442307692307

34.

11. Solve(5) * - 52x-3 = 20

Answer»

ANSWER:

-52x-3=20

-52x=20+3

-52x=23

x=23/-52

x=-0.442307692307

Discussion

35.	Macth the verbal with the mathmatical smybol
Answer» Step-by-step EXPLANATION: a small sphere of radius 2.0mm and density 8.0×10^3kg/m^3.the viscous force F opposing the motion is PROPORTIONAL to the velocity V in m/s of the sphere and is given by the FORMULA F=0.057V.calculate the terminal velocity of the sphere(g=10m/s^2)

35.

Macth the verbal with the mathmatical smybol

Answer»

Step-by-step EXPLANATION:

a small sphere of radius 2.0mm and density 8.0×10^3kg/m^3.the viscous force F opposing the motion is PROPORTIONAL to the velocity V in m/s of the sphere and is given by the FORMULA F=0.057V.calculate the terminal velocity of the sphere(g=10m/s^2)

Discussion

36.	X+7=2y20+y=4xsimultaneous equation
Answer» Answer: x + 7 = 2 × 4x x + 7 = 8x 8x - x = 7 7x = 7 x = 7÷7 x = 1 20 + y = 4x 20 + y = 4 × 1 20 + y = 4 y = 4-20 y = -16

36.

X+7=2y20+y=4xsimultaneous equation

Answer»

Answer:

x + 7 = 2 × 4x

x + 7 = 8x

8x - x = 7

7x = 7

x = 7÷7

x = 1

20 + y = 4x

20 + y = 4 × 1

20 + y = 4

y = 4-20

y = -16

Discussion

37.	(5) if a fair coin is tossed 8 times, theprotability of getting 4 heads is (a)35/128(b)53/64(c)105/128(d) none of these
Answer» ANSWER: (d) NONE of these is the answer

37.

(5) if a fair coin is tossed 8 times, theprotability of getting 4 heads is (a)35/128(b)53/64(c)105/128(d) none of these

Answer»

ANSWER:

(d) NONE of these is the answer

Discussion

38.	23.Diameter isa) twice radiusc)equal to radiusb)half radiusdJone-third of radius
Answer» ANSWER: TWICE RADIUS DIAMETER= 2R

38.

23.Diameter isa) twice radiusc)equal to radiusb)half radiusdJone-third of radius

Answer»

ANSWER:

TWICE RADIUS

DIAMETER= 2R

Discussion

39.	Proof of quotient rule
Answer» Answer: (x) = -G/(x) (g(x))2 . A PROOF of the QUOTIENT RULE. This will be easy since the quotient f/g is just the product of f and 1/g. So, to prove the quotient rule, we'll just use the product and reciprocal rules.

39.

Proof of quotient rule

Answer»

Answer:

(x) = -G/(x) (g(x))2 . A PROOF of the QUOTIENT RULE. This will be easy since the quotient f/g is just the product of f and 1/g. So, to prove the quotient rule, we'll just use the product and reciprocal rules.

Discussion

40.	IN THE ANNUAL DAY PROGRAMME, 65 •/• OF THE STUDENTS IF A SCHOOL WERE PARTICIPANTS. IF THE STRENGTH OF THE SCHOOL IS 4,000 ,FIND THE NUMBER OF NON-PARTI CIPANTS
Answer» Answer: 1400 STUDENTS Step-by-step EXPLANATION: the no. of participants=65% of 4000 =65/100×4000 =65×40 =2600 students So, the no. of non-participants= TOTAL no. of students- the no. of participants =4000-2600 =1400

40.

IN THE ANNUAL DAY PROGRAMME, 65 •/• OF THE STUDENTS IF A SCHOOL WERE PARTICIPANTS. IF THE STRENGTH OF THE SCHOOL IS 4,000 ,FIND THE NUMBER OF NON-PARTI CIPANTS

Answer»

Answer:

1400 STUDENTS

Step-by-step EXPLANATION:

the no. of participants=65% of 4000

=65/100×4000

=65×40

=2600 students

So, the no. of non-participants= TOTAL no. of students- the no. of participants

=4000-2600

=1400

Discussion

41.	Sin4Q+cos4Q/1-2sin2Q.cos2Q=1
Answer» Answer: EXPLANATION:- LHS, =>sin^4Q+cos^4Q/1-2sin^2Qcos^2Q. =>(sin^2Q)^2+(cos^2Q)^2/1-2sin^2Qcos^2Q. =>(sin^2Q+cos^2Q)^2-2cos^2Qsin^2Q/1-2 cos^2Qsin^2Q . =>1-2cos^2Qsin^2Q/1-2cos^2Qsin^2Q. Now , numerator and denominator will be cancelled out. =>1, RHS. ________________________________________ __________________ Formula USED. (a^2+ b^2)=(a+b)^2-2ab. Sin^2A+cos^2A=1. Step-by-step explanation: HOPE it will help you.

41.

Sin4Q+cos4Q/1-2sin2Q.cos2Q=1

Answer»

Answer:

EXPLANATION:-

LHS,

=>sin^4Q+cos^4Q/1-2sin^2Q*cos^2Q.

=>(sin^2Q)^2+(cos^2Q)^2/1-2sin^2Q*cos^2Q.

=>(sin^2Q+cos^2Q)^2-2cos^2Q*sin^2Q/1-2 cos^2Q*sin^2Q .

=>1-2cos^2Q*sin^2Q/1-2cos^2Q*sin^2Q.

Now , numerator and denominator will be cancelled out.

=>1, RHS.

________________________________________

__________________

Formula USED.

(a^2+ b^2)=(a+b)^2-2ab.
Sin^2A+cos^2A=1.

Step-by-step explanation:

HOPE it will help you.

Discussion

42.	Add: 3x 2 y, -5x 2 y, -x 2 y
Answer» ANSWER: SORRY STILL not LEARND about it. Step-by-step EXPLANATION:

42.

Add: 3x 2 y, -5x 2 y, -x 2 y

Answer»

ANSWER:

SORRY STILL not LEARND about it.

Step-by-step EXPLANATION:

Discussion

43.	What is the measure of an angle whose mesaure is 32 degree less than its supplement answer
Answer» Answer: 180-32 = 148 Degrees Step-by-step EXPLANATION:

43.

What is the measure of an angle whose mesaure is 32 degree less than its supplement answer

Answer»

Answer:

180-32 = 148 Degrees

Step-by-step EXPLANATION:

Discussion

44.	√12√13/√1115 find the answer to the question
Answer» ANSWER: $4 \sqrt{39 } \div \sqrt{165}$

44.

√12√13/√1115 find the answer to the question

Answer»

ANSWER:

$4 \sqrt{39 } \div \sqrt{165}$

Discussion

45.	The length containing 175 meter of a piece of a wood can be divided in 7 parts find each length of the part
Answer» Answer: THE LENGTH OF EACH PART OF WOOD WILL BE OF 35 METERS IN LENGTH.

45.

The length containing 175 meter of a piece of a wood can be divided in 7 parts find each length of the part

Answer»

Answer:

THE LENGTH OF EACH PART OF WOOD WILL BE OF 35 METERS IN LENGTH.

Discussion

46.	A shirt with market price rs800 is sold at 20% discount. Find its net selling price ?
Answer» Answer: 640 rs Step-by-step explanation: 20% of 800= 160, so 800-160 =640

46.

A shirt with market price rs800 is sold at 20% discount. Find its net selling price ?

Answer»

Answer:

640 rs

Step-by-step explanation:

20% of 800= 160, so 800-160 =640

Discussion

47.	What is the motive of pie in maths?
Answer» Answer: In basic MATHEMATICS, pi is used to find the AREA and circumference of a circle. Pi is used to find area by multiplying the radius SQUARED times pi. So, in trying to find the area of a circle with a radius of 3 centimeters, π32 = 28.27 cm. hope it helps U #NAWABZAADI

47.

What is the motive of pie in maths?

Answer»

Answer:

In basic MATHEMATICS, pi is used to find the AREA and circumference of a circle. Pi is used to find area by multiplying the radius SQUARED times pi. So, in trying to find the area of a circle with a radius of 3 centimeters,

π32 = 28.27 cm.

hope it helps U

#NAWABZAADI

Discussion

48.	The perimeter of a square field is 25 metre find the length of the side of the square field
Answer» as we KNOW that the PERIMETER is 25M so SIDE is 6.25m

48.

The perimeter of a square field is 25 metre find the length of the side of the square field

Answer»

as we KNOW that the PERIMETER is 25M so SIDE is 6.25m

Discussion

49.	Radius of circle with Centre O is 7 cm length of op 8 cm then the position of point P is,___of the circle
Answer» <P>Answer: position of POINT P is, OUTSIDE of the circle

49.

Radius of circle with Centre O is 7 cm length of op 8 cm then the position of point P is,___of the circle

Answer»

<P>Answer:

position of POINT P is, OUTSIDE of the circle

Discussion

50.	5x plus dash equals to 13 has the solution -3
Answer» Answer: 5x + X = 13 6x = 13 x = 13/6 x = 2.16 hope it HELPS U

50.

5x plus dash equals to 13 has the solution -3

Answer»

Answer:

5x + X = 13

6x = 13

x = 13/6

x = 2.16

hope it HELPS U

Discussion

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IN THE ANNUAL DAY PROGRAMME, 65 •/• OF THE STUDENTS IF A SCHOOL WERE PARTICIPANTS. IF THE STRENGTH OF THE SCHOOL IS 4,000 ,FIND THE NUMBER OF NON-PARTI CIPANTS

Sin4Q+cos4Q/1-2sin2Q.cos2Q=1

EXPLANATION:-

________________________________________

Formula USED.

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